Non-freezing valve.



Ey 01A.

NON-FREEZWG VALVE APPLICAHON msn JAN. .6. v1x5.

1 1 87,376 Partei-med June 13, 1916.

l n vento/L largement or abutment 4 terminatin rrED srn'rn ERICK OJ'A, OF STORIA, OREGON.

NON-FREEZING VALVE.

Specification of Letters Patent.

Patent-ea June 13, ioni.

Application led January 1G, 1915. Serial No. 2,715.

To all i/.rhom it m og/ concern Be it known that I, ERICK OJA, a' citizen ofthe United States, residing at Astoria, 1n the county of Clatsop and State of Oregon, have invented new and useful Improvements in Non-Freezing Valves, of which the following is a specification.

This invention relates to non-'freezing valves for steam boilers, and its primary object is to provide a blow-oil or similar valve for steam boilers wherein the valve men'iber is disposed within the boiler, thus preventing freezing and Vbursting of the valve under all conditions, except in the remote contingency of the Water freezing within the boiler.

A further object of the invention is t prf vide a valve structure of this kind Where the valve seat and valve are so arranged ai Y. mounted as to permit the same to be readily and convenient. y removed, ground and reapplied when occasion requires. f

The invention consists of the features of construction, combination and arran ement of parts herein fully described and c aimed, reference being had to the accompanying drawing in Wh1ch:-'-

Figure 1 is a horizontal longitudinal section through a blow-oil' valve embodying my invention. Fig. 2- is a cross section on the line 2-2 of Fig. l. Fig. 3 is an end view looking toward the valve-seat. Fig. 4 is a detail view of the valve per se.

ln Carrying my inventioninto practice I provide a substantially elbow-shaped valve casing 1 comprising a body portion 2 having an inlet end disposed in longitudinal alinement therewith, and an outlet 4, disposed at right angles thereto. The inlet end of the easing is formed vto provide an angular' enm a tubular externaliy threaded nipple 5 a apted to tit within a threaded opening 6 in the'wall of the boiler 7 The nipple 5 terminates in an end portion `which is substantially frustoconical form in cross section providin inner and outer beveled surfaces 8 and 9. bean# guiar enlargement 4t is adapted for the application .of a wrench or other suitable tool whereby the valve casing may be readily applied to and removed from the boiler.

The curved wall 10 of the casing at the angle of intersection of the casing body and outlet end 4 is provided with an extension 11 Iwhich is'disposed in longitudinal alinement with the axis of the casing body.

Through the body 2 and the said extension 11 extends a valve stem 12 which is provided with a threaded surface 13 engaging coacting threads 14 Within the extension 11, whereby said stem is adapted when turned in clockwise and countercloekvvise directionsk to be adjusted longitudinally in and out'for the purpose of seatingand unseati'gr thy The outer end of the valve stem is valve. provided with a hand Wheel or other suitable operatin device 15, and a stuing box 16 is provide at the outer end of the eXtension 1l to surround the stem and prevent leakage at that point.

The stern is movable Within a supportin and guide member or diaphragm 17 forme or mounted Within the casing body, and which is. provided with a guide opening of suitable shape. and size, and the inner end of the stem extends through and beyond the niple 5 and carries a valve member 18 for cooperation therewith. This valve member comprises a conical body 19 formed at its base or outer portion with. a flange 20 prof vided with an angular or beveled face 21, the body of the valve being formed'with a tapered bore 22 to fit upon a tapered portion 23 of the stem. The valve is held in engagement with this tapered portion of the stern b v a nut 24 fitted upon the inner extremity of the stem, which nut is held from displace ment by a Cotter pin or key 25. The valvel is provided with an externally threaded coln lar 26 which surrounds the nut and is adapted to be engaged by an internally threaded cap 27, whereby the nut and adjacent parts may be inclosed and protected from injury and to a large extent against the access of Water thereto. The cap may be provided with a finger piece 28 to facilitate its application and removal.

It will be understood from the foregoing description, that by turning the valve stem in one-'direction or the other the-stem will be longitudinally adjusted to move the valve into and out of closing position. When moved into closing position the conical face ofthe valve body will be adjusted with relation to the beveled face v8 of the seat portion of the nipple 5, vvhile the angular face 21 4will.-bel adjusted with relation to the beveled face 9 of the seat portion, thus giving in effect a double closure of the valve against its seat, whereby a water tight joint is effected. When the valve is adjusted inwardly or moved away from its seat, the

' the outlet 4.

It will be see'n from the construction described that the valve and its sent nre :xrranged Wholly Within the boiler, and thus can not possibly freeze in cold Weather except under the rare contingency thatrt-he Water in the boiler is frozen. Hence a practically non-freezing valve is provided which will not burst or become clogged by frozen Wnter under any and all normal conditions, and which at the same time may be readily and conveniently applied to and removed from the boiler in its application or removal for the substitution of a new valve or for the purpose of grinding or dressing the valve Y seat and valve when occasion requires.

` vVhile the valve is primarily designed for mener/e threaded inlet ni'eple provided with an inner beveled surface forming e valve Seat face and an outer beveled surface forming a sealing face, :L stern having a tapering end portion with e threaded terminal projecting through the faire casing and beyond the nipple, a valve member upon'said tapering end ef the stem having a tapered opening receiving the tapering end of the stem and a beveled surface for engagement with the beveled seat face of the nipple, said valve member being also provided with an outwardly extending collar partially inelosin said threaded terminal of thestem and wita. iange forming an abutment shoulder at the inner end of the collar and provided with n. beveled face arranged at an angle to the beveled fece of the valve for engagement with. said beveled Mn-ling face of the nipple, a nut upon the threaded terminal of tie-sten: and inclosed within the coller, said mit holding the tapered surfaces of the stem and .nlre in l :agement and n oep 1n threaded engng with said coller und surrounding lie nut and adjncent end of i'he'stem and abutting against said shoulder.

ln testimony 'whereof 1 nflix my signature.A

ERICI OJA. 

